Cutting by use of rotating axially moving tool – With signal – indicator – illuminator or optical means
Patent
1990-02-08
1992-06-02
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With signal, indicator, illuminator or optical means
B23B 3900
Patent
active
051182270
ABSTRACT:
Improvements in template boring machines, formed because they leave the platform fixed and the bit with an up and down movement, by means of a circuit with various multivibrators connected to one another by different relay sections, allowing movement of the rotating motors and lift and fall of the bit; automatic cycle repeat, by means of end of stroke microswitches designed in the lift and fall motor; acoustic means coupled to warn of end of cycle, and time constant device, for automatic cycle performance, and adjustment of bit, by immobilizing the rotating motor of the bit, and lift movement of the bit to a maximum position, where it is set, returning to automatic performance when a hand switch is pressed.
REFERENCES:
patent: 3120136 (1964-02-01), Bieker
patent: 3728027 (1973-04-01), Watanabe
patent: 3854836 (1974-12-01), Weissman
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